Article
Veterinary Sciences
Wondimu Wodajo, Nejib Mohammed, Ephrem Tora, Wasihun Seyoum
Summary: This study investigated the seroprevalence and risk factors of Newcastle disease (ND) in unvaccinated backyard chickens in Kindo Koisha district, Wolaita zone, Ethiopia. The results showed that ND is prevalent among poultry and backyard farming communities, with crossbreed chickens and larger flock sizes being associated with higher risk of infection. The study suggests the implementation of vaccination campaigns and effective extension programs to raise awareness about the disease.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Yohannis Betela, Gizachew Hailegebreal, Dessie Shiferaw
Summary: Poultry production is important to Ethiopian farmers and the national economy, but infectious diseases are a significant challenge. A study in Melokoza District, Ethiopia aimed to determine the seroprevalence of Newcastle disease in unvaccinated chickens and identify associated risk factors. A total of 405 blood samples were collected and tested, revealing an overall seroprevalence of 68.8%. The study highlighted the need for regular vaccination and further research to understand the impact of Newcastle disease on backyard poultry production in the area.
Article
Agriculture, Dairy & Animal Science
Antonietta Di Francesco, Giulia Quaglia, Daniela Salvatore, Sonia Sakhria, Elena Catelli, Ghaith Bessoussa, Khaled Kaboudi, Noureddine Ben Chehida, Caterina Lupini
Summary: This study investigated the circulation of CIAV in Tunisian broilers and found that CIAV DNA was detected only in the rural farm, while industrial farms were negative. The results highlight the importance of constant surveillance for CIAV in backyard chicken production.
Article
Virology
Madhan Mohan Chellappa, Sohini Dey, Dinesh Chandra Pathak, Asmita Singh, Narayan Ramamurthy, Saravanan Ramakrishnan, Asok Kumar Mariappan, Kuldeep Dhama, Vikram N. Vakharia
Summary: The study utilized a Newcastle disease virus (NDV) strain as a viral vector to deliver immunogenic genes of chicken infectious anaemia virus (CIAV), resulting in a bivalent vaccine candidate for chickens. The vaccine was able to induce robust humoral and cell-mediated immune responses in chickens, showing potential for effective protection against NDV and CIAV infections.
Article
Veterinary Sciences
Vinay G. Joshi, Deepika Chaudhary, Nitish Bansal, Renu Singh, Sushila Maan, Nand K. Mahajan, Chintu Ravishankar, Niranjana Sahoo, Sunil K. Mor, Jessica Radzio-Basu, Catherine M. Herzog, Vivek Kapur, Parveen Goel, Naresh Jindal, Sagar M. Goyal
Summary: Newcastle disease virus (NDV) causes Newcastle disease in poultry in India, with a 9.8% apparent prevalence rate found in a surveillance study. The presence of NDV in commercial and backyard poultry emphasizes the importance of surveillance studies even in apparently healthy flocks. The study contributes to a better understanding of NDV epidemiology and could help formulate disease control strategies for both commercial and backyard birds.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Infectious Diseases
Haijin Liu, Jianxia Tian, Kejia Lu, Yangyang Li, Zhao Guan, Xuhong Cao, Xiaoqin Li, Zhengwu Chang, Xinglong Wang, Xiao Sa, Zengqi Yang
Summary: This research identified chicken interferon-stimulated gene 12-2 as a potential adjuvant that can attenuate the virulence of Newcastle disease virus and increase the immunogenicity of the vaccine strain. It may contribute to the development of efficient poultry vaccines.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)
Article
Veterinary Sciences
Charlie F. Amoia, Jean N. Hakizimana, Nisha K. Duggal, Augustino A. Chengula, Mohammed A. Rohaim, Muhammad Munir, James Weger-Lucarelli, Gerald Misinzo
Summary: The genetic nature of currently circulating Newcastle disease virus (NDV) genotypes in backyard poultry flocks in East Africa is poorly understood. This study characterized the NDV genotypes in Tanzania and found that subgenotype VII.2 is the predominant strain in the region. This information is important for the design of vaccines and disease control efforts.
VETERINARY SCIENCES
(2023)
Article
Agriculture, Dairy & Animal Science
Giulia Quaglia, Giulia Mescolini, Elena Catelli, Giacomo Berto, Filippo Muccioli, Caterina Lupini
Summary: Chicken Infectious Anemia Virus (CIAV) is an immunosuppressive pathogen of chickens, with strains circulating in different types of chicken flocks. The study in Italy revealed the molecular characteristics of CIAVs, showing highly heterogeneous strains and a worldwide distribution map of field viruses. Non-invasive samples such as feathers and environmental dust were successfully used for DNA amplification, with strains clustered into various genogroups with genetic markers related to virulence evaluated.
Review
Immunology
Anthony C. Ike, Chukwuebuka M. Ononugbo, Okechukwu J. Obi, Chisom J. Onu, Chinasa V. Olovo, Sophia O. Muo, Okoro S. Chukwu, Eleazar E. Reward, Odinakachukwu P. Omeke
Summary: Infectious bronchitis (IB) and Newcastle disease (ND) remain major threats to the poultry industry worldwide. Despite numerous vaccines developed against these viruses, rapid genetic variations pose a challenge to effective control. Various strategies, such as combining live attenuated and inactivated vaccines, developing IB/ND vaccines, and using DNA vaccines and transgenic plant vaccines, are being utilized to address this issue. Increasing understanding of immunological mechanisms in birds is crucial for successful disease control and global food security.
Article
Agriculture, Dairy & Animal Science
Abdirahman Mohamed Osman, Omolade A. Oladele, Abdalla Mohamed Ibrahim, Mahdi Ali Mahamoud, Mohamed Abdelrahman Mohamed, Nnenna Ogechukwu Nwachukwu
Summary: The cross-sectional study conducted in Banadir region of Somalia between January and April 2019 revealed a high prevalence of Newcastle disease in backyard chickens, with adult chickens showing a significantly higher infection rate compared to grower chickens. Further molecular studies are necessary to develop evidence-based control measures to minimize the economic and social impacts of the disease on smallholders.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2021)
Article
Veterinary Sciences
Abel B. Ekiri, Bryony Armson, Kehinde Adebowale, Isabella Endacott, Erika Galipo, Ruth Alafiatayo, Daniel L. Horton, Adah Ogwuche, Olorunsola N. Bankole, Hussein M. Galal, Beatty-Viv Maikai, Mariana Dineva, Aliyu Wakawa, Erik Mijten, Gabriel Varga, Alasdair J. C. Cook
Summary: The majority of commercial poultry farms in Oyo and Kano states of Nigeria lack adequate protection against IBV and NDV, making them vulnerable to field challenges. Detection of IBDV and IBV RNA on farms with vaccination history indicates potential vaccination failure or mismatch between vaccine and circulating strains, rendering them non-protective.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Behailu Assefa Wayou, Gezahegne Mamo Kassa, Daniela Pasotto, Teshale Sori, Claudia Maria Tucciarone, Mattia Cecchinato
Summary: Poultry production is on the rise globally, including in Ethiopia, with poultry being a valuable food resource. A survey in Ethiopia investigated the presence of viral pathogens in poultry, showing low circulation likely due to vaccination strategies. Routine diagnostic activities should be planned to monitor pathogen circulation and support disease prevention and production levels, especially in rural and backyard flocks.
Article
Veterinary Sciences
Ho Thi Viet Thu, Huynh Ngoc Trang, Nguyen Tran Phuoc Chien, Nguyen Trong Ngu, Nguyen Duc Hien
Summary: This study investigates the status of Marek's disease (MD) in backyard flocks in the Mekong Delta of Vietnam and analyzes clinical cases over a year. The results indicate that all examined flocks had MD, mostly in acute form with typical lesions of visceral lymphomas. Additionally, nononcogenic turkey herpesvirus serotype 3 was found in half of the examined flocks. Lower morbidity and mortality were observed in chicken flocks that had received MD vaccination.
Article
Agriculture, Dairy & Animal Science
Muhammed Walugembe, Augustine Naazie, James R. Mushi, George A. Akwoviah, Esther Mollel, Juliana A. Mang'enya, Ying Wang, Nadira Chouicha, Terra Kelly, Peter L. M. Msoffe, Hope R. Otsyina, Rodrigo A. Gallardo, Susan J. Lamont, Amandus P. Muhairwa, Boniface B. Kayang, Huaijun Zhou, Jack C. M. Dekkers
Summary: The study exposed unvaccinated local chicken ecotypes from Ghana and Tanzania to velogenic Newcastle disease virus strains, revealing the genetic basis of ND response traits and suggesting that velogenic ND resistance could be improved through selective breeding of these chicken ecotypes.
Article
Genetics & Heredity
Liang-xing Guo, Fu-rong Nie, An-qun Huang, Rui-ning Wang, Meng-yun Li, Hong-yu Deng, Yan-zhou Zhou, Xian-min Zhou, Yan-kun Huang, Jia Zhou, Yu-dan Ji
Summary: This study utilized RNA-seq to investigate the altered expression of immune-related genes in chicken thymus in response to NDV infection, identifying candidate targets that may be involved in the regulation of NDV infection. The findings provide new insights into the complicated regulatory mechanisms of virus-host interactions and explore new strategies for protecting chickens against the virus.
Article
Biotechnology & Applied Microbiology
Libby O. Onyeka, Abiodun A. Adesiyun, Karen H. Keddy, Evelyn Madoroba, Ayanda Manqele, Peter N. Thompson
JOURNAL OF FOOD PROTECTION
(2020)
Article
Veterinary Sciences
K. N. Koeppel, B. F. Kuhn, P. N. Thompson
PREVENTIVE VETERINARY MEDICINE
(2020)
Article
Infectious Diseases
John Duncan Grewar, Thibaud Porphyre, Evan S. Sergeant, Camilla Theresa Weyer, Peter Neil Thompson
TRANSBOUNDARY AND EMERGING DISEASES
(2020)
Article
Multidisciplinary Sciences
Yusuf B. Ngoshe, Alida Avenant, Melinda K. Rostal, William B. Karesh, Janusz T. Paweska, Whitney Bagge, Petrus Jansen van Vuren, Alan Kemp, Claudia Cordel, Veerle Msimang, Peter N. Thompson
SCIENTIFIC REPORTS
(2020)
Article
Veterinary Sciences
Chloe Batie, Daouda Kassie, Diary Ny Ranto Mamorisoa Randravatsilavo, Laurence Baril, Agnes Waret Szkuta, Flavie Luce Goutard
FRONTIERS IN VETERINARY SCIENCE
(2020)
Article
Microbiology
Freude-Marie Bertram, Peter N. Thompson, Marietjie Venter
Summary: The article discusses the epidemiological and clinical presentation of West Nile Virus (WNV) in horses in South Africa during 2016-2017. It was found that WNV-positive cases were more likely to occur in young horses without vaccination, especially after heavy rain in late summer and autumn.
Article
Microbiology
Maruping Mangena, Nomakorinte Gcebe, Rian Pierneef, Peter N. Thompson, Abiodun A. Adesiyun
Summary: Q fever, a neglected zoonosis in South Africa, causes reproductive disorders in livestock and game animals. Limited studies have been done on the extent of Coxiella burnetii infections in South Africa, and there is a lack of knowledge about the circulating strains of C. burnetii in the country. A cross-sectional study conducted in Gauteng, South Africa found that slaughter animals may pose a risk of exposing abattoir and farm workers to C. burnetii.
Article
Microbiology
Krpasha Govindasamy, Eric M. C. Etter, Peter Geertsma, Peter N. Thompson
Summary: Despite the lack of significant progress towards bovine brucellosis elimination in Gauteng province, there is variability in brucellosis prevalence between State Vet Areas. A public health and farmer-supported strategy of ongoing district-based surveillance and cattle vaccination targeting small- to medium-sized herds combined with compulsory test and slaughter of reactors in larger herds is recommended for the province.
Article
Microbiology
Krpasha Govindasamy, Peter N. Thompson, Bernice N. Harris, Jennifer Rossouw, Darrell A. Abernethy, Eric M. C. Etter
Summary: The prevalence of cattle handler exposure to Brucella on cattle farms in South Africa is unknown, but a case-control study found higher Brucella exposure rates among farm workers and veterinary officials exposed to infected cattle herds. Risk factors for infected herds include government-sponsored farms, beef herds, open herds, and the presence of other animals on the farm.
Article
Veterinary Sciences
Chloe Batie, Le Thi Thu Ha, Etienne Loire, Dinh Bao Truong, Ha Minh Tuan, Ngo Thi Kim Cuc, Mathilde Paul, Flavie Goutard
Summary: This study aims to determine the socio-economic and technical factors associated with antibiotic usage patterns on chicken farms in the north and south of Vietnam. By analyzing the data, three production systems and three patterns of antibiotic usage were identified, and a tendency of overuse of antibiotics in the south was found.
PREVENTIVE VETERINARY MEDICINE
(2022)
Article
Infectious Diseases
Marie-Jeanne Guenin, Helene Marie De Nys, Marisa Peyre, Etienne Loire, Suporn Thongyuan, Abdoulaye Diallo, Leonce Zogbelemou, Flavie Luce Goutard
Summary: The study aimed to provide insights for the development of a community-based surveillance system for emerging zoonotic diseases in Guinea. Based on participatory epidemiology, the researchers investigated the knowledge and perceptions of diseases and clinical signs among community actors, as well as the strengths and weaknesses of the existing health information exchange network. The results highlighted the heterogeneity in disease knowledge and clinical sign recognition among the actors, and the presence of more effective health communication channels.
PLOS NEGLECTED TROPICAL DISEASES
(2022)
Article
Infectious Diseases
Mariline Poupaud, Flavie Luce Goutard, Vannaphone Phouthana, Facundo Munoz Viera, Domingo Caro, Alessandro Patriarchi, Mathilde C. Paul
Summary: The study investigated the views and practices of farmers in Laos regarding antibiotic use in livestock farming. It found that antibiotics were widely used, with especially concerning use of critically important antibiotics for human medicine. Fish farms had lower antibiotic usage compared to pig and poultry farms, and specialized farms had higher antibiotic usage than mixed livestock-fish farms. The study identified three farmer profiles based on their knowledge, attitudes, and practices regarding antibiotic use and antimicrobial resistance. This information can help the Laotian government develop strategies to control antimicrobial resistance based on the use of critical antibiotics and prophylactic treatments, tailored to different farmer profiles.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)
Article
Virology
Sherry Ama Mawuko Johnson, Richard Asmah, Joseph Adongo Awuni, William Tasiame, Gloria Ivy Mensah, Janusz T. T. Paweska, Jacqueline Weyer, Orienka Hellferscee, Peter N. N. Thompson
Summary: The study aimed to determine the circulation of RVFV in livestock and herders in southern Ghana, estimate its seroprevalence, and identify associated risk factors. The results showed that RVFV has been circulating in southern Ghana, with a recent outbreak in Kwahu East. However, the disease went clinically undetected despite significant human exposure. A One Health approach is recommended to better understand RVF epidemiology and its socio-economic impact in Ghana.
Article
Multidisciplinary Sciences
Chloe Batie, Hang Tran Minh, Van Anh Thi Vu, Duong Thuy Luong, Trang Thi Pham, Nicolas Fortane, Phuc Pham Duc, Flavie Luce Goutard
Summary: This study aims to understand the transition process of Vietnamese chicken farmers towards reduced antibiotic usage. Interviews with farmers revealed that the main motivations for reducing antibiotic use were to produce quality and cost-effective chickens, while barriers included poor biosecurity, market failures, and farmer's lack of knowledge. Local innovations, such as handmade probiotics and farmer cooperatives, helped overcome these obstacles.
Article
Immunology
Christian Ducrot, Alexandre Hobeika, Christian Lienhardt, Barbara Wieland, Charlotte Dehays, Alexis Delabouglise, Marion Bordier, Flavie Goutard, Ekta Patel, Muriel Figuie, Marisa Peyre, Arshnee Moodley, Francois Roger
Summary: Although Africa has the lowest antimicrobial usage in animals globally, there is a high prevalence of antimicrobial resistance in foodborne pathogens from animals. Farmers lack knowledge and misuse antimicrobials, posing a serious public health threat. Policy interventions should be tailored to address the challenges faced by family farmers in Africa and provide innovative measures to tackle antimicrobial resistance.
EMERGING INFECTIOUS DISEASES
(2021)
Article
Agriculture, Dairy & Animal Science
Jesper Tessin, Judith Rohde, Arne Jung, Nicole Kemper, Jochen Schulz
Summary: In this study, samples from poultry house environment and culled birds were collected, and E. cecorum was successfully isolated. The principle of isolating the pathogen by streaking on a chromogenic agar may motivate researchers to investigate transmission routes and optimize biosecurity measures.
Article
Agriculture, Dairy & Animal Science
Junqin Zhang, Zimin Xie, Yanlin Pan, Zuoxin Chen, Yunzhen Huang, Linlin Li, Jiawen Dong, Yong Xiang, Qi Zhai, Minhua Sun, Xingying Li, Shujian Huang, Ming Liao
Summary: In recent years, there has been an increase in the occurrence of fowl adenovirus 2 (FAdV-2) in China, posing a significant threat to the poultry industry. This study investigated the epidemiology, phylogenetic relationship, genomic characteristics, and pathogenicity of FAdV-2. The results showed that FAdV-2 was the most commonly detected serotype among various FAdV serotypes. Genetic analysis revealed that these FAdV-2 strains formed a distinct branch within the FAdV-D group and had a high nucleotide similarity with reference strains. Recombination analysis identified recombination events between FAdV-2 and FAdV-11 in some strains. Pathogenicity experiments demonstrated that a recombinant FAdV-2 strain caused a high mortality rate and more severe disease in chickens. These findings contribute to our understanding of FAdV-2 and provide a basis for vaccine development.
Article
Agriculture, Dairy & Animal Science
Ebtsam Iraqi, Ali Abdel Hady, Nadia Elsayed, Hanaa Khalil, Amina El-Saadany, Karim El-Sabrout
Summary: Thermal manipulation during egg incubation, particularly at 12 to 18 days, has positive effects on embryonic development, hatching characteristics, chick quality, as well as posthatch thermotolerance and performance.
Article
Agriculture, Dairy & Animal Science
Yong Liu, Mingxin Song, He Bai, Chunhua Wang, Fei Wang, Qi Yuan
Summary: Dietary curcumin supplementation can significantly improve egg quality of quails in the late laying period, primarily by improving lipid metabolism and selectively regulating the intestinal microbial community.
Article
Agriculture, Dairy & Animal Science
Lei Zhang, Zhixuan Song, Peiyao Li, Xingju Song, Xinming Tang, Dandan Hu
Summary: This study evaluated the vaccine potential of recombinant proteins for avian coccidiosis caused by Eimeria. The results showed that the rEten5-B protein can trigger immune protection against E. tenella and may be a potential and effective subunit vaccine for the control of coccidiosis in poultry.
Article
Agriculture, Dairy & Animal Science
Milan Kumar Sharma, Amit Kumar Singh, Doyun Goo, Venkata Sesha Reddy Choppa, Hanseo Ko, Hanyi Shi, Woo Kyun Kim
Summary: The study investigates the effect of Eimeria infection on gastrointestinal physiology, growth performance, and egg production of Hy-Line W-36 laying hens during peak production. Results show that Eimeria infection negatively affects body weight, feed intake, immune response, and nutrient transporter gene expression. Egg production temporarily ceases in hens infected with high and medium-high dosages of Eimeria.
Article
Agriculture, Dairy & Animal Science
Elwy A. Ashour, Mahmoud Kamal, Hayman A. A. Altaie, Ayman A. Swelum, Gamaleldin M. Suliman, Guillermo Tellez-Isaias, Mohamed E. Abd El-Hack
Summary: This study evaluated the effects of CP and ME on the performance and nutritional value of Japanese quail lay chicken. The results showed that protein and energy levels significantly influenced all productive outcomes except feed conversion ratio. The combination of dietary energy and protein levels had a substantial effect on all egg quality trials evaluated. It is recommended to feed layer Japanese quail between the ages of 8 and 20 weeks during the summer with a dietary energy content of 2,900 kcal ME/kg and 20% CP.
Article
Agriculture, Dairy & Animal Science
J. E. Doornweerd, R. F. Veerkamp, B. de Klerk, M. van der Sluis, A. C. Bouwman, E. D. Ellen, G. Kootstra
Summary: Tracking group-housed individual broilers using video can provide valuable information on their health, welfare, and performance. This study conducted a comprehensive analysis on broiler tracking on video and potential tracking errors, highlighting the potential and challenges of phenotyping broiler locomotion. The results emphasized the importance of addressing tracking errors, potential algorithm improvements, and the need for an external animal identification system for efficient locomotion phenotyping.
Article
Agriculture, Dairy & Animal Science
Jiayu Wu, Yanan Wang, Yu An, Changyu Tian, Lingfeng Wang, Zuhong Liu, Desheng Qi
Summary: This study compared the gene expression differences in liver tissues of laying hens at different ages using RNA sequencing, and found that the transport and metabolism of amino acids changed during the growing period, which influenced the growth and development of the hens.
Article
Agriculture, Dairy & Animal Science
J. Raabe, G. Raveendran, W. Otten, K. Homeyer, T. Bartels
Summary: This study investigated the effects of different flicker frequencies on the behavior, performance, and stress response in male turkeys. The results showed that flicker frequencies of 165 Hz or higher had no detrimental effect on growth performance, injurious pecking, or endocrine stress response in the turkeys.
Article
Agriculture, Dairy & Animal Science
Adamu Mani Isa, Yanyan Sun, Yuanmei Wang, Yunlei Li, Jingwei Yuan, Aixin Ni, Hui Ma, Lei Shi, Hailai Hagos Tesfay, Yunhe Zong, Panlin Wang, Pingzhuang Ge, Jilan Chen
Summary: This study sequenced mRNAs and lncRNAs in the ovary stroma of specific chicken breeds and their reciprocal crossbreds to understand the molecular mechanism of heterosis for egg production. Results showed that genes with nonadditive expression were related to follicle growth and atresia as well as oxidative stress in the crossbred hens.
Article
Agriculture, Dairy & Animal Science
Zhepeng Wang, Qiu Chen, Yiwei Wang, Yulu Wang, Ruifang Liu
Summary: The study investigates the functional variants associated with chicken eggshell color in the SLCO1B3 gene by measuring the eggshell color of Lueyang black-boned chickens and analyzing the genetic data. It identifies 15 variants in SLCO1B3 that are significantly associated with eggshell color. However, the functional analysis shows that one specific variant, 1B3_SNP108, does not have a significant effect on promoter activity. This study highlights the importance of SLCO1B3 and its variants in breeding eggshell color.
Article
Agriculture, Dairy & Animal Science
P. Yin, Q. Tong, B. M. Li, W. C. Zheng, Y. Wang, H. Q. Peng, X. L. Xue, S. Q. Wei
Summary: This study investigated the welfare and health of laying hens in a multitier system. The results showed that the spatial distribution of hens changed with increasing age, and lower-ranking hens preferred to stay in lower tiers to avoid competition but still had access to resources. This improved the welfare and health of the hens near the end of the laying cycle.
Article
Agriculture, Dairy & Animal Science
Wenwen Liang, Siqiong Jie, Yiqin Wang, Xiaowei Wen, Yanling Xiong, Xiaoxi Lin, Zhengrong Lv
Summary: This study examined the effect of risk perceptions on preventive behavior among vendors in the live poultry wholesale market and the live poultry retail market in Guangdong Province using the health belief model and structural equation modeling. The results showed that perceived severity and perceived benefits positively influenced vendors' self-efficacy in the wholesale market, while perceived barriers negatively affected self-efficacy in both the wholesale and retail markets. Moreover, cues to action mediated the relationship between perceived severity, perceived benefits, and self-efficacy, and also mediated the effect of perceived susceptibility among wholesale market vendors.
Article
Agriculture, Dairy & Animal Science
Shreeya Sharma, Raveendra R. Kulkarni, Shayan Sharif, Hosni Hassan, Mohammadali Alizadeh, Scott Pratt, Khaled Abdelaziz
Summary: The study investigates the impact of exposing chick embryos to antigens via in ovo delivery of poultry-specific lactobacilli on the expression of genes associated with early bursal development and maturation. Results indicate that the supplementation of poultry-specific lactobacilli to chick embryos can accelerate the development and immunological maturation of the bursa of Fabricius.